Lab: Energy Transfer Answers

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5

What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in the transfer of heat through conduction.

Answer:

The melting of the chocolate pieces one by one showed that it was caused by heat flowing through the foil bridge. The transfer of heat happened between the foil bridge and the chocolate pieces because they were touching each other.

6

Which statements describe how heat flows in foil? Check all that apply.

A
Heat flows in all directions.
B
Heat flows from left to right only.
C
The atoms on top of the foil absorb heat first.
D
The atoms near the candle absorb heat first.
E
Heat flows from the cooler atoms to the warmer atoms.
F
Heat flows from the warmer atoms to the cooler atoms.
7

Complete the sentences to describe the convection experiment. The model showed convection. In the convection model, the red water on the bottom of the beaker . This means that the water at the bottom of the beaker was the water near the top of the beaker.

Answers:
The model showed convection. In the convection model, the red water on the bottom of the beaker . This means that the water at the bottom of the beaker was the water near the top of the beaker.:red water in hot water
The model showed convection. In the convection model, the red water on the bottom of the beaker . This means that the water at the bottom of the beaker was the water near the top of the beaker.:rose to the top of the beaker
The model showed convection. In the convection model, the red water on the bottom of the beaker . This means that the water at the bottom of the beaker was the water near the top of the beaker.:warmer than
10

Which statement describes how heat flows from the coffee to the part of the spoon in the coffee?

A
Heat flows from the coffee to the spoon through radiation.
B
Heat flows from the coffee to the spoon through convection.
C
Heat flows from the coffee to the spoon through conduction.
D
Heat flows from the coffee to the spoon through radiation, convection, and conduction.
12

Which title best reflects the main idea of the passage?

A
The Role of Convection in the Distribution of Earth's Energy
B
The Role of Heat Transfer Methods in the Distribution of Earth's Energy
C
Conduction, Convection, and Radiation: Methods of Heat Transfer
D
Conduction, Convection, and Radiation: The Heating Up of Earth's Surface
13

What did you include in your response? Check all that apply.

A
The melting of the pieces of chocolate one by one is evidence that conduction occurred.
B
As heat flowed through the foil bridge, heat transferred to the pieces of chocolate, causing them to melt.
C
The heat transfer occurred between the foil bridge and the chocolate pieces, which were in direct contact with one another.
14

stayed at the bottom of the beaker✔ rose to the top of the beakermixed throughout the beaker

A
stayed at the bottom of the beaker
B
rose to the top of the beaker
C
mixed throughout the beaker
15

✔ paperlight bulb

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16

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20

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